EP0828126A1 - Belüftungsvorrichtung zur Trocknung von Produkten, insbesondere Formkörper welche nachher auszuhärten sind - Google Patents

Belüftungsvorrichtung zur Trocknung von Produkten, insbesondere Formkörper welche nachher auszuhärten sind Download PDF

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Publication number
EP0828126A1
EP0828126A1 EP97402057A EP97402057A EP0828126A1 EP 0828126 A1 EP0828126 A1 EP 0828126A1 EP 97402057 A EP97402057 A EP 97402057A EP 97402057 A EP97402057 A EP 97402057A EP 0828126 A1 EP0828126 A1 EP 0828126A1
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EP
European Patent Office
Prior art keywords
box
opening
axis
air flow
products
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP97402057A
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English (en)
French (fr)
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EP0828126B1 (de
Inventor
Philippe Hatton
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ceric SARL
Original Assignee
Ceric SARL
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Publication date
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Publication of EP0828126A1 publication Critical patent/EP0828126A1/de
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
    • F26B21/004—Nozzle assemblies; Air knives; Air distributors; Blow boxes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
    • F26B21/02—Circulating air or gases in closed cycles, e.g. wholly within the drying enclosure
    • F26B21/022—Circulating air or gases in closed cycles, e.g. wholly within the drying enclosure with provisions for changing the drying gas flow pattern, e.g. by reversing gas flow, by moving the materials or objects through subsequent compartments, at least two of which have a different direction of gas flow
    • F26B21/024—Circulating air or gases in closed cycles, e.g. wholly within the drying enclosure with provisions for changing the drying gas flow pattern, e.g. by reversing gas flow, by moving the materials or objects through subsequent compartments, at least two of which have a different direction of gas flow by using movable fan units

Definitions

  • the present invention relates to a ventilation device intended for drying various products. She is more particularly intended for the ceramic industry and for example for drying products raw in the ground before passing through a baking oven.
  • the present invention relates to a ventilation device which has much better performance than known devices.
  • the present invention relates to a ventilation device for drying stacked products of the type comprising a box provided on the one hand a fan and on the other hand, outlet openings, the fan being arranged at the end of said box so that propel an air flow characterized by the fact that the axis of the outlet openings of said air flow out of the box form an angle acute with the axis of the fan flow.
  • the invention also relates to a drying enclosure. comprising, between the rows of products to be dried, corridors in which circulate ventilation devices conforming to the present invention.
  • Figure 1 a front view and in section along AA of a known vertical axis ventilation device.
  • Figure 2 three views in side elevation, in view of behind and in plan of a ventilation device with horizontal axis of known type.
  • Figure 3 a side elevational view of a oblique axis ventilation according to the invention
  • Figure 4 a front view of the ventilation device of the figure 3.
  • Figure 5 a partial perspective view of the device breakdown of Figures 3 and 4.
  • FIG. 6 a top view of the ventilation device Figures 3 to 5.
  • Figure 7 a side elevational view of a variant of realization of the invention.
  • Figures 1 and 2 show two ventilation of known type; Figure 1 showing a device to vertical axis and Figure 2 a device with horizontal axis.
  • the device is consisting of a cylinder 10, with vertical axis, surmounted by a fan 11, driven by a motor 12 and having two side openings 13 and 14 located along two diametrically opposite generators
  • This device has two drawbacks.
  • the first is that the air flow entering the cylinder through the opening 15 causes a venturi effect which results in no blown air on the stacks at the top of the cylinder (about 50 cm) but on the contrary a slight aspiration. Products B located at the party top of the A stacks are therefore poorly dried.
  • the second disadvantage is that the enclosure of the cylinder 10 must be put under pressure so that air is blown horizontally through the longitudinal slots 13 and 14. This necessary pressurization constitutes a loss of energy so that the performance of the device is affected.
  • the ventilation device comprises a box 20 which has two opposite side openings 24 extending over the entire the height of said box 20.
  • a plurality of fans 21 are arranged one above the other over the entire height and are arranged to blow drying air in one direction represented by arrow f1. This air flow is deflected 90 ° to one side and 90 ° from another by covers 23 which divide the air flow in two opposite currents f2 which arrive at the openings 24.
  • This device has the advantage of eliminating the two disadvantages of the device of Figure 1 but has the drawback of requiring a large number of fans 21, each driven by a motor 22 and therefore to be expensive, moreover the 90 ° deflection of the air flow causes energy loss.
  • the present invention relates to a ventilation device having neither the drawbacks of the device of FIG. 1 nor that of figure 2.
  • This device consists of a box 30 provided at its upper part of a circular opening 35 in which is placed a fan 31 driven by a motor 32, and the opening of outlet 33 of said box 30 is in a plane which is oblique with relative to the X axis of the box which is also the axis of the air flow.
  • the X axis of the flow air is oblique and the outlet opening 33 of the box 30 is in a vertical plane.
  • the box 30 is a parallelepiped of square section whose axis X is arranged obliquely, and the fan 31 is placed in the box 30 of so that the axis of the air flow it causes coincides with the X axis of the box.
  • the section of the parallelepiped 30 by a vertical plane is a rectangle 33 whose short side is equal to the side of the square section box 30; the angle "a" made by the X axis with said vertical plane is determined so that the long side of said rectangle 33 has a length substantially equal to the height "h" of the stacks A.
  • this angle "a” is approximately 30 °. In practice it should be between 20 ° and 40 ° but whatever be the value of this angle "a”, it is such that the exit aperture (33) completely cuts off the flow of the fan (31).
  • the drying chamber 40 has several pairs C of rows of stackings A between which are formed corridors D.
  • corridors D there are two pairs C of rows stacking and three lanes D.
  • a plurality of devices ventilation E move in the corridors D, each device of ventilation E being in accordance with the device described in Figures 3 to 5.
  • the box 30 a a square section slightly larger than the diameter of the fan 31, this arrangement being geometrically the most convenient. But he It is obvious that to adapt the air distribution box consisting of the opening 33, the lamellae and the plate 36 can be adapt the dimensions of the rectangular parallelepiped constituting the box 30; the invention being in no way limited to the example of chosen realization.
  • the air flow leaving through the orifices 13 and 14 was in the upper part oriented at about 45 ° obliquely towards the low, this obliqueness gradually decreasing to be practically zero about 50 cm from the entrance of the box, but the speed of the flow was very weak in the upper part to reach its maximum only at the base of the box.
  • box 30 and formwork 34/36 we get not only less energy loss (pressurization lower) but a perfect distribution of the air streams according to the arrow F2 all horizontal and at the same speed.
  • the invention is not limited to the case where the box 30 is a parallelepiped of square or rectangular section.
  • This box can indeed be a cylinder whose director can be a circle where an ellipse in this case the opening 33 is an ellipse and the dimensions of cylinder 30 and the value of angle "a" must be determined so that the major axis of the ellipse is practically equal to "h".
  • FIG. 7 represents an alternative embodiment which is in makes the second possible alternative for carrying out the invention: in the first case (figures 36) the X axis is oblique and the opening 33 vertical; in the second case ( Figure 7) the X axis is vertical and the oblique opening 33. Other than that all the elements are the same and therefore bear the same references.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Drying Of Solid Materials (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
EP97402057A 1996-09-04 1997-09-04 Belüftungsvorrichtung zur Trocknung von Produkten, insbesondere Formkörper welche nachher auszuhärten sind Expired - Lifetime EP0828126B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9610757A FR2752925B1 (fr) 1996-09-04 1996-09-04 Dispositif de ventilation perfectionne pour le sechage de produits, notamment de produits crus destines a etre ensuite cuits
FR9610757 1996-09-04

Publications (2)

Publication Number Publication Date
EP0828126A1 true EP0828126A1 (de) 1998-03-11
EP0828126B1 EP0828126B1 (de) 2001-05-23

Family

ID=9495415

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97402057A Expired - Lifetime EP0828126B1 (de) 1996-09-04 1997-09-04 Belüftungsvorrichtung zur Trocknung von Produkten, insbesondere Formkörper welche nachher auszuhärten sind

Country Status (4)

Country Link
EP (1) EP0828126B1 (de)
AT (1) ATE201505T1 (de)
DE (1) DE69704914T2 (de)
FR (1) FR2752925B1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2967487A1 (fr) * 2010-11-15 2012-05-18 Hatton Philippe Marcel Emilien Dispositif destine a guider et redresser le flux d'air des appareils de ventilation rotatifs utilises pour le sechage dans l'industrie des tuiles et briques

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR22590E (fr) 1919-08-27 1921-07-23 Pilade Barducci Système et appareil pour la ventilation de chambres de séchage
GB236998A (en) * 1924-04-14 1925-07-14 Drying Systems Inc Equalized distribution system for fluids
FR699030A (fr) 1930-07-17 1931-02-09 Procédé et appareil de séchage d'objets au moyen de courants se déplaçant dans le local
US2852311A (en) * 1955-04-22 1958-09-16 Ind Ovens Inc Gas distributor head
FR1191253A (fr) * 1957-02-20 1959-10-19 Installation de séchage
DE2554406A1 (de) * 1975-12-03 1977-06-08 Max Wagner Vorrichtung zum trocknen keramischer formlinge
US4060914A (en) * 1976-08-18 1977-12-06 Proctor & Schwartz, Inc. Apparatus for treating material with a gaseous medium
GB2039013A (en) 1978-12-22 1980-07-30 Drytech Eng Ltd Drying apparatus
EP0017665A1 (de) 1979-04-09 1980-10-29 KELLER OFENBAU GmbH Anlage zum rhythmischen Trocknen von keramischen Formlingen

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR22590E (fr) 1919-08-27 1921-07-23 Pilade Barducci Système et appareil pour la ventilation de chambres de séchage
GB236998A (en) * 1924-04-14 1925-07-14 Drying Systems Inc Equalized distribution system for fluids
FR699030A (fr) 1930-07-17 1931-02-09 Procédé et appareil de séchage d'objets au moyen de courants se déplaçant dans le local
US2852311A (en) * 1955-04-22 1958-09-16 Ind Ovens Inc Gas distributor head
FR1191253A (fr) * 1957-02-20 1959-10-19 Installation de séchage
DE2554406A1 (de) * 1975-12-03 1977-06-08 Max Wagner Vorrichtung zum trocknen keramischer formlinge
US4060914A (en) * 1976-08-18 1977-12-06 Proctor & Schwartz, Inc. Apparatus for treating material with a gaseous medium
GB2039013A (en) 1978-12-22 1980-07-30 Drytech Eng Ltd Drying apparatus
EP0017665A1 (de) 1979-04-09 1980-10-29 KELLER OFENBAU GmbH Anlage zum rhythmischen Trocknen von keramischen Formlingen

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2967487A1 (fr) * 2010-11-15 2012-05-18 Hatton Philippe Marcel Emilien Dispositif destine a guider et redresser le flux d'air des appareils de ventilation rotatifs utilises pour le sechage dans l'industrie des tuiles et briques

Also Published As

Publication number Publication date
DE69704914T2 (de) 2001-11-22
EP0828126B1 (de) 2001-05-23
FR2752925A1 (fr) 1998-03-06
FR2752925B1 (fr) 1998-10-09
ATE201505T1 (de) 2001-06-15
DE69704914D1 (de) 2001-06-28

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